The Smart Transmitter/Digital Communications (ST/DC) is a direct replcement for the A/D card for MC, EC, and CB. It was designed to replace the standard analog inputs 1-5V. Four LEDs show the status of the card.

The ST/DC contains 7 switch settings, 1-3 are for factory use only, 4-6 for type of controller, and 7 is not used.

Switch Settings:                 4    5    6 
Basic Controller                   on   on   on 
EC status to bus with DIDEPI       off  off  on 
EC status to J1 without DIDEPI     on   off  on

Multifunction Controller           on   on   off

 

 
LEDs:  LED	Color   Normal State	Meaning	
        1	green     on           24V D/O pwr OK 
        2	green     blinking     Main on-card CPU OK            	
        3       green     on           A/D is ready 
        4	red       off          A/D Calibrtation                 

is questionable. 

 Accepted Inputs:

 - 16 analog (1 to 5V)

 - 8 Digital ST in single-range and 8 analog transmitter inputs (1 to 5V)

 - 8 Digital ST in dual-range or multivarable range